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Cryptizard t1_ixcya3n wrote

Reply to comment by ArgentStonecutter in Expert Proposes a Method For Telling if We All Live in a Computer Program by garden_frog

There is no such thing as an entangle macro state, so everything you have written here is based on an incorrect assumption. Nobody actually thinks the cat is dead and alive, it is reduction ad absurdism to illustrate the limitations of schroedingers equation. Read a book on quantum mechanics.

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ArgentStonecutter t1_ixczyvr wrote

You say that with such insulted seriousness.

And yet there are many respected physicists treating the many-worlds interpretation entirely seriously. Here's a fairly recent paper arguing that it's actually required for conservation of energy in QM.

https://www.preposterousuniverse.com/blog/2021/01/28/energy-conservation-and-non-conservation-in-quantum-mechanics/

> What you and I think of as a “measurement” is just when a quantum system in a superposition becomes entangled with some macroscopic object (the “measuring apparatus”), which in turn becomes entangled with its environment (“decoherence”).

Edit: Oh, you blocked me? Well, bye bye.

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red75prime t1_ixd0u7u wrote

Correction. Whether the cat can be in a dead-alive superposition is an open question. The enormous technical difficulties of keeping and detecting such a state make its experimental testing a very distant prospect (if we won't find the definite line between quantum micro and classical macro before that).

I'm not sure what is the largest object that was kept in a superposition. Wikipedia mentions piezoelectric resonator which comprises about 10 trillion atoms.

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